Spies and secret agents.
Buchan, John,1875-1940.Thirty-nine steps.
Childers, Erskine,1870-1922.Riddle of the sands.
Le Queux, William,1864-1927.Secret service.
Maugham, W. Somerset (William Somerset),1874-1965.Ashenden.
London : Chancellor,
1993.
The 39 steps / John Buchan -- The riddle of the sands / Erskine Childers -- A secret service / William le Queux -- Ashenden / W. Somerset Maugham.